EP 2476000 B1 20161207 - SYSTEM AND METHOD FOR MEASURING CONDUCTIVITY/RESISTIVITY OF WATER HAVING HIGH PURITY
Title (en)
SYSTEM AND METHOD FOR MEASURING CONDUCTIVITY/RESISTIVITY OF WATER HAVING HIGH PURITY
Title (de)
SYSTEM UND VERFAHREN ZUR MESSUNG DER LEITFÄHIGKEIT/DES WIDERSTANDS VON WASSER MIT HOHER REINHEIT
Title (fr)
SYSTÈME ET PROCÉDÉ DE MESURE DE CONDUCTIVITÉ/RÉSISTIVITÉ D'EAU DE GRANDE PURETÉ
Publication
Application
Priority
- US 27606809 P 20090908
- US 2010048159 W 20100908
Abstract (en)
[origin: WO2011031782A2] A system and related method are provided for measuring conductivity/resistivity of water having high purity, including a temperature sensor and a conductivity/resistivity sensor exposed to a water source. The system further includes a computing assembly configured to receive measurement signals from the sensors and to determine change in resistivity over a change in temperature (a collected R/T slope) from the collected temperature measurements and the collected resistivity measurements. The system compares the collected R/T slope to a standardized R/T slope at a temperature value corresponding to a midpoint temperature of the temperature measurements over the prescribed time interval. Based on the comparing, the system provides providing a compensated measurement for resistivity or conductivity of the water source. As a result, the system can calibrate the sensor continually during use, in real time, resulting in highly improved accuracy.
IPC 8 full level
G01R 27/22 (2006.01); G01K 13/02 (2006.01); G01N 27/06 (2006.01); G01N 33/18 (2006.01)
CPC (source: EP US)
G01K 13/02 (2013.01 - EP US); G01K 13/026 (2021.01 - EP); G01N 27/06 (2013.01 - EP US); G01N 33/18 (2013.01 - EP US); G01K 13/026 (2021.01 - US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
DOCDB simple family (publication)
WO 2011031782 A2 20110317; WO 2011031782 A3 20110811; WO 2011031782 A8 20111110; EP 2476000 A2 20120718; EP 2476000 A4 20151202; EP 2476000 B1 20161207; US 2011218750 A1 20110908; US 8326555 B2 20121204
DOCDB simple family (application)
US 2010048159 W 20100908; EP 10816032 A 20100908; US 87786910 A 20100908